After new October security update i noticed my phone drains its battery so much.
Usually i had been using my phone for 8 hours or more based on screen on time.
But now it provides only 4 hours or 5:30 hours ! Seriously ? I'm not satisfied with its update ! Samsung doesn't provide any solid update like apple does ! And so long time to wait for phone to get updated ! Very disappointed ! So samsung does listen to its customer problem !